It must not be very difficult to come by tickets behind the plate, because I see different people there practically every night.
They cost about $320-$340 apiece. That's why. (I sat there at the Grand Opening day. ouch!)
I wondered if they'd set up patio tables in that open area behind those seats. The handrail at center leads up to the President's Club restaurant, which is where they're eating in the first innings. They do have seat service, and waitresses bring food and beer to your seat.